I was in college before I took my first airplane ride – a trip from Nashville to Philadelphia for (no surprise here) the 1976 National Trust Preservation Conference.  It was probably another ten-to-fifteen years after that before I traveled outside the U.S. Growing up in a large, middle-class family in Tennessee in the 1950s and 1960s, we didn’t just jump on an airplane when we felt the urge. My children find this difficult to comprehend, since they took their first flight at 6 months of age, and by the time they were in college the number of countries they had visited required both hands to count.  When I tell them that my grandparents probably stayed in Tennessee their entire lifetimes, they begin to recognize the dramatic changes that take place from one generation to the next. I’ve been working to make up for lost time when it comes to travel.  Both personally and professionally, I have the opportunity and privilege to travel to many places both in the U.S. and around the world.  I was thinking …